Used item. There are some slight color irregularities and minor stains, but they are not very noticeable. I've washed it about 5 times. The elastic around the neck feels a bit stretched, and there's a general sense of wear. Please make your judgment based on the images. Please refrain from purchasing if you are sensitive to these issues. I purchased this at a Calvin Klein store in Guam for around 10,000 yen, so it is definitely authentic. The size is listed as S, but it's an American size, so I think it's a bit large. BTS's Jungkook and BLACKPINK's Jennie were Calvin Klein models.